高级氧化技术处理含酚炼油废水的研究

DEGRADATION OF REFINING WASTEWATER CONTAINING PHENOL WITH SUPER OXIDATION METHOD

采用Photo/Fenton/C2O42-体系处理含酚炼油废水,研究反应机理,建立Photo/Fenton/C2O42-体系降解苯酚的动力学方程。实验结果表明,光助Fenton技术能有效地提高Fenton试剂的降解效率,对于250 mL质量浓度为500 mg/L的苯酚废水,在30%H2O2溶液投加量0.5 mL、反应温度40℃、草酸钠投加量10 mL、FeSO4.7H2O投加量0.05 g、pH值3、反应时间30 min的条件下,苯酚的去除率可达到98%以上。实验结果同时证明了含酚炼油废水的Photo/Fenton/C2O42-氧化反应属于一级反应。

In this paper refining wastewater containing phenol was disposed by photo/Fenton/C2O4^2-system,the reaction mechanism was discussed and a kinetic equation was set up. The experimental results indicated that photo/Fenton/C2O4^2- technology could enhance the removal of phenol by Fenton reagent effectively. When treating 250 mL of wastewater containing 500 mg/L phenol under the conditions of a H202 （30%） dosage of 0. 5 mL,a Na2C204 （1 g/L） dosage of 10 mL,a FeSO4·7H20 dosage of 0.05 g,a pH value of 3,a reaction temperature of 40℃ and a reaction time of 30 rain,the phenol removal rate reached more than 98%. And the experimental results indicated that the oxidizing reaction of wastewater containing phenol by Photo/Fenton/ C204^2- technology was a first order reaction.